Keystones — Cornerstone
Five GCSE retrieval questions · 3 August 2018 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 3⁄6 + 1⁄6
Answer: 2⁄3 -
2. Algebra Two-step equations
Solve: 2x - 13 = 5
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 7cm and 24cm
Answer: 25cm -
4. Ratio Sharing in a ratio
Divide 242 in the ratio 4:3:4
Answer: 88, 66 and 88 -
5. Statistics Mean
Find the mean of: 7, 8, 7, 11, 10
Answer: 8.6